Photographic-printing apparatus.



No. 757,798. v PATENTED APR. 19, 1904. H. G. WHITEK: A. H. MALLISON. PHOTOGRAPHIO PRINTING APPARATUS.

APPLICATION FILED APR 21, 1903.

I0 MODEL.

INY'ENTURS,

WITNESSES,

HA WILEY U. WHITE.

Ali/YIN H. MALLIE'UN.

.ATTURNE Y Patented April 19, 190&.

UNITED STATES PATENT OFFICE.

HAWLEY C. WHITE AND ALVIN, H. MALLISON, OF NORTH BENNINGTON, VERMONT, ASSIGNORS TO H. O. WHITE (10., A CORPORATION OF VER- MONT.

PHOTOGRAPHIC-PRINTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 757,798, dated April 19, 1904.

Application filed April 21, 1903. Qerial No. 153,638. (No model.)

To all whom it may concern..-

Be it known that we, HAWLEY O. WHITE and ALVIN H. MALLISON, citizens of the United States of America, and residents of North Bennington, in the county of Bennington and State of Vermont, have invented certain new and useful Improvements in Photographic-Printing Apparatus, of which the following is a specification.

This invention relates to improvements in photographic-printing frames.

The objects sought to be effected by the improvements are to provide a frame having facilitiesfor inserting and removing a negative without dismantling the frame and also for securing an accurate and fixed adjustment of the negative within the frame.

. The invention is fully shown in the draw-. ings, in which Figure 1 is a perspective View of the back sideof one of these improved frames with one corner broken away to show its construction. Fig. 2 shows a partial longitudinal section through the two members of one side of the frame. 7

The invention consists of two rectangular sashes A and B, the interior margin of one of which is rabbeted, as at O, and the exterior edge of the other, as at D, so that one will fit into the other, as seen in Fig. 1. Sufficient space is left between the faces of the rabbets on the interior to receive the negative K and allow their faces to be covered with felt or similar cushioning material, as at e and f, which is used for the purpose of preventing breakage of the negative and to insure perfect closure of both frames upon the negative, so as to exclude light; but this padding is ,not an essential. The front sash is slotted at one end or side, as at L, to admit the passage of a negative therethrough, said slot opening through the frame on the same plane as the rabbeted ledge on which the glass rests. The two sashes are connected by s'crews H H, which pass through one sash and screw into nuts G Gr of the other sash. Thusthe two may be screwed together firmly or may be slightly separated by backing out the screws for removing or changing negatives. The back V is adapted to fill the space within the frame and is cushioned with any suitable material, as at J, to

bear against the paper. This back is fitted with a finger-piece or handle O, by which to lift it out of position to remove the print. A binding-lever M is hinged to the back sash B, as at Q, to the under side of which a spring P is attached, which bears against the upper side of the back V. When this lever is forced down into its binding position, this spring forces the backV down upon the paper, so as to secure perfect contact of the same with the negative, and is fastened there by a springcatch N. Opposing sockets R R and S S are provided in the two sashes for the reception of the expansive springs T T, which act to separate the two sashes when the screws H H cially adapted to the printing of stereographic' views, and for that purpose the interior of the frame is preferably of dimensions to fit paper trimmed to the proper size for a stereoscopic print. As the two pictures on stereoscopic negatives are usually separated by a narrow vertical blank, which marks the center of the plate, a corresponding mark W is placed on the inside of the frame to aid in locating the exact center of the negative; but any other adequate means for this purpose may be adopted without departing from our invention.

It will be observed that when the two members of the frame are fastened together collectively they form a practically integral frame with such a groove and slot with provisions to hold the negative in place while in use as fully within the scope of this part of our invention and a fair equivalent therefor.

\Ve therefore claim as our invention, and desire to secure by Letters Patent, the following:

1. A photographic-printing frame consisting of two members, the face member being an internally-rabbeted frame having a slot through its edge abreast the negative for the passage of the same, and a rear member being an externally-rabbeted frame adapted to fit the face member and close down on the inserted negative, and means for clamping the two frames together adj ustably, whereby by loosening the clamp a slight separation of the members may be effected for the removal or insertion of the negative, substantially as specified.

2. The combination of an externally and an internally rabbeted frame with space between them for the reception of a negative, a slot through one of said frames for the passage of a negative, a device or devices for holding the two frames in apposition, and means adapted to slightly separate the two members to change negatives, substantially as specified.

3. The combination of an externally-rabbeted frame and an internally-rabbeted frame with space between them for the reception of a negative, and means for connecting and disconnecting them, of a separable closing back and a device for locking the back down against the paper, substantially as specified.

i. A photographic-printing frame consisting of an internally rabbetcd member to receive a negative, having a slot-opening therethrough for its passage, an internal bindingframe adapted to fit the interior of the rabbeted frame, adjustable means for connecting the two members and for regulating the binding pressure on the inclosed negative, and a closing back and elastic locking device for holding the paper in contact with the negative, substantially as specified.

5. A photographic printing frame composed of two counterparts having a groove around the interior edge thereof to support the negative, a slot through one side of the frame on the plane of the groove for the passage of the negative, means for holding the negative in operative position in the frame, a back for confining the paper in close contact with the negative and a locking device for holding the back in operative position, substantially as specified.

6. A photographic-printing frame consisting of an internally-rabbeted member to receive the negative, an internal binding-frame adapted to fit the interior of the rabbetedfralne, adjustable means for connecting the two members and for regulating the binding pressure on the inclosed negative, and a closing back and elastic locking device for holding the paper in contact with the negative, substantially as specified.

Signed by us at North Bennington, Vermont, this 29th day of September, A. 1). 1902.

HAWLEY C. WHITE. ALVIN H. MALLISON.

Witnesses:

AGNES R. \VHIPPLE, GRAcE L. NEWTON. 

